Current Electricity-III Physics Test Series For NEET-2020

Test Preparation on Current Electricity-III-Physics Test Series For NEET 2020

1.

A student measures the terminal potential difference (V) of a cell
(of emf E and internal resistance r) as a function of the current
(I) flowing through it. The slope, and intercept, of the graph
between V and I, then, respectively, equal

1E and −r
2–r and E
3r and –E
4–E and r

2.

Two cells, each of e.m.f. E and internal resistance r are
connected in parallel between the resistance R . The
maximum energy given to the resistor will be, only when

1R = r / 2
2R = r
3R = 2r
4R = 0

(a) For maximum energy, we have
External resistance of the circuit
= Equivalent internal resistance of the circuit i.e.
R =r/2

3.

Kirchhoff's first law i.e.∑i = 0 at a junction is based on the

law of conservation of

1Charge
2Energy
3Momentum
4Angular Momentum

(a) Kirchhoff's first law is based on the law of conservation
of charge.

4.

1A
2B
3C
4D

5.

See the electrical circuit shown in this figure. Which of the
following equations is a correct equation for it

1A
2B
3C
4D

Check your progress:


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