Current Electricity-Electrical Energy and Power (BITSAT Physics): Questions 1 - 4 of 4

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Question number: 1

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

If current flowing in a conductor changes by 1% , then power will change by –

Choices

Choice (4) Response

a.

10%

b.

2%

c.

1%

d.

100%

Question number: 2

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

10Ω electric heater operates on a 110V line, then the rate at which it develops heat in watts will be –

Choices

Choice (4) Response

a.

670

b.

810

c.

1210

d.

1310

Question number: 3

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

Two identical batteries, each of emf 2volt and internal resistance R=0.5Ω by passing a current through it. The maximum power that can be developed across R using these batteries is –

A circuit diagram three resistors and two batteries

A Circuit Diagram Three Resistors and Two Batteries

In circuit diagram three resistors and two batteries are shown.

Choices

Choice (4) Response

a.

4W

b.

3.2W

c.

2W

d.

8.2W

Question number: 4

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

Kinetic energy of an electron accelerated in a potential difference of 100V is

Choices

Choice (4) Response

a.

1.6×1029J

b.

1.6×1034J

c.

1.6×1021J

d.

1.6×1017J

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