CBSE Class 10 Electricity PYQ Quiz (2015-2019)

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Electricity CBSE PYQs

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Girish N P

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CBSE Class 10 Electricity PYQ Quiz (2015-2019)


CBSE Class 10 Electricity PYQ Quiz (2015-2019)Versión en línea Electricity CBSE PYQs por Girish N P 1 In a circuit, if current is 2 A and resistance is 5 Ω, what is the potential difference? a 7 V b 10 V c 20 V d 1 V 2 A resistor of 10 Ω carries 2 A. The power dissipated is? a 200 W b 5 W c 20 W d 40 W 3 The unit of electrical energy is the? a Ohm (Ω) b Watt (W) c Volt (V) d Joule (J) 4 In a series circuit, the same current passes through each resistor. If two resistors are 4 Ω and 6 Ω, total resistance is? a 10 Ω b 8 Ω c 12 Ω d 2 Ω 5 For a parallel circuit, the total resistance decreases as more branches are added. With two equal resistors R in parallel, total is? a 2R b R/2 c 2R d R 6 Which instrument is used to measure current in a circuit? a Voltmeter b Ohmmeter c Meter stick d Ammeter 7 The gradient of a V–I graph for a ohmic conductor is? a Current b Resistance c Voltage d Power 8 The device that limits current in a circuit is the? a Capacitor b Inductor c Transformer d Resistor 9 In domestic wiring, fuse protects against? a Low resistance b Overvoltage c Short circuit only d Overcurrent 10 Power factor is usually near unity for? a Open circuits b Capacitive loads c Inductive loads d Pure resistive loads 11 In a series circuit, which quantity remains the same across all components? a Resistance b Power c Current d Voltage 12 The unit of electrical resistance is the ohm, symbol Ω. Which quantity is measured by an ammeter? a Resistance b Power c Current d Voltage 13 The device used to measure electrical current in a circuit is an: a Ohmmeter b Galvanometer c Ammeter d Voltmeter 14 Which quantity in a circuit is conserved when resistors are connected in series? a Resistance b Current c Power d Voltage 15 Kilowatt-hour (kWh) is the unit of: a Electrical energy b Electrical charge c Electrical power d Electrical resistance 16 In a circuit, P = VI and P = I^2R. If R is constant, increasing I will: a Decrease power b Increase power c Keep power constant d None of these 17 Which statement is true for resistors connected in parallel? a Voltage across all resistors is the same b Current in each branch is zero c Total resistance equals the sum of individual resistances d Current is the same through all resistors 18 The heating effect of current is utilized in which device? a Voltmeter b Electric heater c Galvanometer d Ammeter 19 Which factor does not affect resistance of a conductor? a Material (resistivity) b External magnetic field c Length of the conductor d Cross-sectional area 20 The fuse in a circuit mainly protects by: a Increasing current to a safe level b Melting and breaking the circuit when current is excessive c Regulating voltage d Storing electrical energy 21 A 5 Ω resistor is connected across a 12 V source. Find the current flowing through it. a 2.0 A b 2.4 A c 1.8 A d 3.0 A 22 A 8 Ω resistor has 2 A flowing through it. Calculate the power dissipated in the resistor. a 16 W b 32 W c 40 W d 24 W 23 A 4 Ω resistor carries 3 A. What is the potential difference across it? a 6 V b 15 V c 12 V d 9 V 24 Two resistors 6 Ω and 3 Ω are in series across 9 V. Find the current in the circuit. a 1 A b 1.5 A c 2 A d 0.5 A 25 Two resistors 6 Ω and 3 Ω are in parallel across 6 V. Find current through the 3 Ω resistor. a 2 A b 3 A c 1 A d 0.5 A 26 A cell emf 1.5 V with internal resistance 0.5 Ω supplies a 1 Ω external resistor. Find the current. a 1.5 A b 0.5 A c 1 A d 2 A 27 A bulb rated 60 W at 220 V. Its resistance is approximately? a 540 Ω b 806.7 Ω c 88 Ω d 120 Ω 28 A 4 Ω and 8 Ω resistor are in parallel across a 12 V source. Find equivalent resistance and total current. a 12 Ω; 1 A b 4 Ω; 3 A c 2.67 Ω; 4.50 A d 8 Ω; 1.5 A 29 A 9 V source with a 3 Ω resistor. Current in the circuit is? a 1 A b 3 A c 2 A d 4 A 30 A 12 Ω resistor has 1.5 A flowing for 2 hours. Energy consumed is approximately? a 0.108 kWh b 0.054 kWh c 0.012 kWh d 0.027 kWh Feedback 1 false 2 false 3 false 4 false 5 false 6 false 7 false 8 false 9 false 10 false

CBSE Class 10 Electricity PYQ Quiz (2015-2019)

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CBSE Class 10 Electricity PYQ Quiz (2015-2019)Versión en línea

por Girish N P

In a circuit, if current is 2 A and resistance is 5 Ω, what is the potential difference?

A resistor of 10 Ω carries 2 A. The power dissipated is?

The unit of electrical energy is the?

In a series circuit, the same current passes through each resistor. If two resistors are 4 Ω and 6 Ω, total resistance is?

For a parallel circuit, the total resistance decreases as more branches are added. With two equal resistors R in parallel, total is?

Which instrument is used to measure current in a circuit?

The gradient of a V–I graph for a ohmic conductor is?

The device that limits current in a circuit is the?

In domestic wiring, fuse protects against?

Power factor is usually near unity for?

In a series circuit, which quantity remains the same across all components?

The unit of electrical resistance is the ohm, symbol Ω. Which quantity is measured by an ammeter?

The device used to measure electrical current in a circuit is an:

Which quantity in a circuit is conserved when resistors are connected in series?

Kilowatt-hour (kWh) is the unit of:

In a circuit, P = VI and P = I^2R. If R is constant, increasing I will:

Which statement is true for resistors connected in parallel?

The heating effect of current is utilized in which device?

Which factor does not affect resistance of a conductor?

The fuse in a circuit mainly protects by:

A 5 Ω resistor is connected across a 12 V source. Find the current flowing through it.

A 8 Ω resistor has 2 A flowing through it. Calculate the power dissipated in the resistor.

A 4 Ω resistor carries 3 A. What is the potential difference across it?

Two resistors 6 Ω and 3 Ω are in series across 9 V. Find the current in the circuit.

Two resistors 6 Ω and 3 Ω are in parallel across 6 V. Find current through the 3 Ω resistor.

A cell emf 1.5 V with internal resistance 0.5 Ω supplies a 1 Ω external resistor. Find the current.

A bulb rated 60 W at 220 V. Its resistance is approximately?

A 4 Ω and 8 Ω resistor are in parallel across a 12 V source. Find equivalent resistance and total current.

A 9 V source with a 3 Ω resistor. Current in the circuit is?

A 12 Ω resistor has 1.5 A flowing for 2 hours. Energy consumed is approximately?