NEET Physics: Questions 801 - 805 of 2142

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Question number: 801

MCQ▾

Question

A current of 5A is flowing at 220 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200V and 50 % of power is lost, then the current in the secondary coil will be -

Choices

Choice (4) Response

a.

0.25A

b.

0.025A

c.

5A

d.

2.5A

Question number: 802

MCQ▾

Question

What is the tension in a rod of length L and mass M at a distance y from F, when the rod is acted on by two unequal forces F1 and F2 (

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 803

MCQ▾

Question

An alternating current is given by the equation . The r. m. s. current is given by

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 804

MCQ▾

Question

A current increases uniformly from zero to one ampere in 0.01 second, in a coil of inductance 10 mH. The induced e. m. f. will be –

Choices

Choice (4) Response

a.

3 V

b.

4V

c.

1 V

d.

2 V

Question number: 805

MCQ▾

Question

An alternating voltage is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is

Choices

Choice (4) Response

a.

500 V

b.

350 V

c.

250 V

d.

300 V

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