AIPMT 2015 | Current Electricity Question 45 | Physics

AIPMT 2015

MCQ (Single Correct Answer)

-1

A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm all connected in series. If the ammeter has a coil of resistance 480 ohm and a shunt of 20 ohm, the reading in the ammeter will be

0.5 A

0.25 A

AIPMT 2015

MCQ (Single Correct Answer)

-1

A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E₀ and a resistance r₁. An unknown e.m.f. E is balanced at a length $$l$$ of the potentiometer wire. The e.m.f. E will be given by

$${{{E_0}l} \over L}$$

$${{L{E_0}r} \over {\left( {r + {r_1}} \right)l}}$$

$${{L{E_0}r} \over {l{r_1}}}$$

$${{{E_0}r} \over {\left( {r + {r_1}} \right)}}.{l \over L}$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is

drift velocity

electric field

current density

current

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A, B and C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are V_A, V_B and V_C respectively, Then

AIPMT 2015 Cancelled Paper Physics - Current Electricity Question 98 English

AIPMT 2015 Cancelled Paper Physics - Current Electricity Question 98 English

V_A = V_B $$ \ne $$ V_C

V_A $$ \ne $$ V_B $$ \ne $$ V_C

V_A = V_B = V_C

V_A $$ \ne $$ V_B = V_C

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