Physics · JEE

Important Questions: Internal resistance, potential difference and emf of a cell, a combination of cells in series and parallel for JEE

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The most important Internal resistance, potential difference and emf of a cell, a combination of cells in series and parallel questions for JEE cover conceptual traps, standard results, and numerical patterns from Internal resistance, potential difference and emf of a cell, a combination of cells in series and parallel. Goodmarks provides 28+ high-yield MCQs with full solutions.

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Part of Current Electricity in JEE Main Physics.

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Q1PhysicsUnit 12: Current Electricity

Fuse wire should be placed in the path of wire

Q2PhysicsUnit 12: Current Electricity

There are a large number of cells available, each marked

(6 V, 0.5 \Omega)

to be used to supply current to a device of resistance

0.75 \Omega,

requiring

24 A

current. How should the cells be arranged, so that power is transmitted to the load using minimum number of cells?

Q3PhysicsUnit 12: Current Electricity

A current of

I

ampere flows through a resistance

R

when connected across a cell of emf

E

and internal resistance

1 \Omega

When

R

is increased by

50 \%

, the current through the circuit is

0.8 A .

The value of

\boldsymbol{R}

is :

Q4PhysicsUnit 12: Current Electricity

In potentiometer experiment, null point is obtained at a particular point for a cell on potentiometer wire

x

cm long. If the length of the potentiometer wire is increased without changing the cell, the balancing length will (Driving source is not changed)

Q5PhysicsUnit 12: Current Electricity

If the switch at point

P

is opened (shown in the figure) choose the correct option

Q6PhysicsUnit 12: Current Electricity

A battery of emf

10 \mathrm{v}

and internal resistance of 0.5 ohms is connected across

A

variable resistance R.The maximum value of

\mathrm{R}

is given by:

Q7PhysicsUnit 12: Current Electricity

A galvanometer in a circuit:

Q8PhysicsUnit 12: Current Electricity

A battery has six cells in series and each cell has an electromagnetic force

1.5 V

and internal resistance

1 \Omega .

If an external load of resistance

24 \Omega

is connected to it. The potential drop across the load is

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Which subtopics in Current Electricity are high-weightage?

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