Current Electricity (BITSAT Physics): Questions 11 - 15 of 23

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Question number: 11

» 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

Question number: 12

» Current Electricity » Temperature Dependence of Resistance

MCQ▾

Question

A wire has resistance of 3.1Ω at 30°C and resistance 4.5Ω at 100°C . The temperature coefficient of resistance of the wire is –

Choices

Choice (4) Response

a.

0.0032°C1

b.

0.0012°C1

c.

0.0064°C1

d.

0.0024°C1

Question number: 13

» Current Electricity » Kirchhoff's Laws

MCQ▾

Question

Two batteries of emf 4V and 8V having the internal resistance of 1Ω and 2Ω respectively are connected in circuit with a resistance of 9Ω as shown in the figure. The current and potential difference between the points P and Q are

 Circuit diagram with two resistors

Circuit Diagram With Two Resistors

In figure circuit diagram with two resistors is shown.

Choices

Choice (4) Response

a.

12Aand9V

b.

16Aand4V

c.

13Aand3V

d.

12Aand12V

Question number: 14

» Current Electricity » Temperature Dependence of Resistance

MCQ▾

Question

Which of the following has negative temperature coefficient of resistance?

Choices

Choice (4) Response

a.

Copper

b.

Aluminum

c.

Iron

d.

Germanium

Question number: 15

» Current Electricity » Electric Cell and Its Internal Resistance

MCQ▾

Question

Which of the following is secondary cell?

Choices

Choice (4) Response

a.

Voltaic cell

b.

Daniel cell

c.

Leclanche cell

d.

Edison cell

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