NEET Physics: Questions 527 - 529 of 2098

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Question number: 527

» Current Electricity » Electric Cell and Its Internal Resistance

Assertion-Reason▾

Assertion (Ꭺ)

In the circuit shown, VaborVaVb=0 , if I=2A

Circuit of battery and resistance.

Circuit of Battery and Resistance.

In figure 4V battery connected to 2Ω resistor between a and b.

Reason (Ꭱ)

Potential difference across terminals of a non-ideal battery is less than its emf when i current flow through it.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 528

» Current Electricity » Electric Cell and Its Internal Resistance

Assertion-Reason▾

Assertion (Ꭺ)

A larger dry cell has higher emf.

Reason (Ꭱ)

The emf of a dry cell is independent of its size.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 529

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

In the figure the two parallel wires PQ and ST are at 30 cm apart. The currents flowing in the wires are according to figure. The force acting over a length of 5m of the wires is-

Two parallel current carrying wires

Two Parallel Current Carrying Wires

In the figure the two parallel wires PQ and ST are at 30 cm apart. In PQ wire, current of 10 A is flowing and in ST wire, current of 15A is flowing.

(1) 5 x 10 -4 N (2) attraction

(3) 5 x 10 -8 N (4) repulsion

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

1, 2 and 3 are correct

d.

2 and 4 are correct

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