Question

standard 9th current electricity mcqs​

Answer 1

Answer:

please give full question.........

Answer 2

By increasing the temperature the resistance of a conductor

(A) increases.

(B) decreases.

(C) remains constant.

(D) initially increases then decreases.

2. A battery of emf V volts, resistance R1 & R2, a condenser C and switches S1 and S2 are connected in a circuit as shown in figure. The capacitor C gets fully charged to V volts when



(A) S1 & S2 are both closed

(B) S1 & S2 are both open

(C) S1 closed and S2 open

(D) S2 closed & S1 open.

3. The equivalent resistance of a circuit between A and B is



(A) 3 Ω

(B) zero.

(C) 6 Ω

(D) 3/2 Ω

4. In the circuit shown in figure, the voltmeter reading would be



(A) 0 volt.

(B) 0.5 volt.

(C) 1 volt.

(D) 2 volt.

5. The V-I graph for a conductor at temperatures T1 and T2 are as shown in the figure, (T2 – T1) is proportional to



(A) cos 2θ

(B) sin 2θ

(C) cot2θ

(D) tan 2θ

6. If a copper wire is stretched to make it 0.1 % longer. The percentage change in its resistance is

(A) 0.2 % increase

(B) 0.2% decrease

(C) 0.1 % increase

(D) 0.1 % decrease

This is your answer brother

Please mark it as brainlist