Question

7.
Each of the resistors shown in figure has resistance of 4 1. If a current of 2 A
flows through resistor R1, then the
resistance of each resistor shown in the diagram is 4 0. If a current of resistor R1
to 2 A flows, then

​

Answer 1

Answer:

hi

Explanation:

ANSWER

The current in the circuit is calculated from the formula I=

R+r

ε

where,

ε- emf of the cell

R- external resistance

r- internal resistance of the cell.

When the cell of internal resistance of 3 ohms and the total current in the circuit is given as 0.25 A the current relation is given as

That is, 0.25=

R+3

2

.

The value of R is 5Ω

Hence, the total resistance in the circuit is 5 ohms, out which one resistor is 4 ohms. So, the unknown combined resistance is 5-4=1 ohm.

Hence the combined resistance is given as

2

1

+

R

1

=

1

1

.

Therefore the value of R is 2Ω

Hence, the value of R is 2 ohms

pls mark my answer has brilliant

Answer 2

answer :- 2a c

r1_hjandldn

also f

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