Heating Effect Of Electric Current Mock Tests

15 questions available

Heating Effect Of Electric Current Mock Test 1

Questions: 15

Sample Questions

Class 10 Science

An electric fan of 100 W is used for 5 hours. The electrical energy consumed is:

A 0.5 kWh

B 5 Wh

C 5 kWh

D 50 kWh

Class 10 Science

An electric heater connected to a 120 V supply draws a current of 5 A. How much electrical energy is consumed in 2 hours?

A 1200 J

B 7200 J

C 4,320,000 J

D 1,200,000 J

Class 10 Science

An electric oven is rated at 2 kW. If it is used for 3 hours daily, the energy consumed in one day is:

A 0.6 kWh

B 6 kWh

C 60 kWh

D 200 kWh

Class 10 Science

An electric oven of 2 kW power is used in a domestic electric circuit of 220 V that has a fuse of 5 A rating. What is likely to happen?

A The oven will not work at all

B The fuse will melt because the current drawn exceeds 5 A

C The fuse will not melt because the current drawn is within 5 A

D The voltage of the circuit will increase

Class 10 Science

The power consumed by a resistor carrying a current of 2A with a voltage of 12V across it is:

A 6W

B 24W

C 14W

D 10W

Class 10 Science

A 220 V, 1100 W electric heater is connected to a 220 V supply. The resistance of the heater and the current drawn are respectively:

A 44 Ω and 5 A

B 22 Ω and 10 A

C 88 Ω and 2.5 A

D 110 Ω and 2 A

Class 10 Science

A 100W electric bulb is used for 5 hours daily. The energy consumed in kWh per day is:

A 0.5 kWh

B 0.2 kWh

C 5 kWh

D 50 kWh

Class 10 Science

An electric bulb is rated at 60 W, 220 V. What is the current drawn by the bulb when it operates at its rated voltage?

A 0.27 A

B 0.36 A

C 0.45 A

D 0.55 A

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