# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 505 - 507 of 2320

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## Question number: 505

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MCQ▾

### Question

When a Leclanche cell is connected to a 10Ω resistance then a current of 0.25 ampere flows in the circuit. If the resistance is reduced to 4 Ω then current becomes 0.5ampere. The internal resistance of galvanometer will be

### Choices

Choice (4)Response

a.

0.5 Ω

b.

2 Ω

c.

1.5 Ω

d.

1 Ω

## Question number: 506

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MCQ▾

### Question

In the fig. shown, Calculate the current through 3 ohm resistor. The emf of battery is 2 volt and its internal resistance is ohm.

### Choices

Choice (4)Response

a.

1.22 amp

b.

0.44 am.

c.

0.88 amp

d.

0.33 amp

## Question number: 507

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MCQ▾

### Question

Which is correct statements?

(1) The Wheatstone bridge is most sensitive when all the four resistances are of the same order

(2) Kirchhoff’s first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge.

(3) The rheostat can be used as a potential divider.

(4) In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge.

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4)Response

a.

1 and 3

b.

1,2 and 3

c.

1 and 2

d.

2 and 4

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