Home
Class 12
PHYSICS
A uniform wire of resistance 9 Omega is ...

A uniform wire of resistance `9 Omega` is cut into 3 equal parts. They are connected in form of equilateral triangle `ABC`. A cell of e.m.f. `2V` and negligible internal resistance is connected across `B` and `C`. Potential difference across `AB` is

A

1 V

B

2 V

C

3 C

D

0.5 V

Text Solution

Verified by Experts

The correct Answer is:
A
`R_(eq) = (6 xx 3)/9 = 2 Omega`
`I = 2/2 =1A`
`I_(AB) = 3/9 xx 1= 1/3 A`
`V_(AB) = 1/3 xx 3 = 1V`
Promotional Banner

Similar Questions

Explore conceptually related problems

A uniform wire of resistance (50 Omega) is cut into 5 equal parts. These parts are now connected in parallel.the Equivalent resistance of the combination is

A uniform wire of resistance 12 Omega is cut into three pieces in the ratio 1 : 2 : 3 and the three pieces are connected to form a triangle. A cell of emf 8 V and internal resistance 1 Omega is connected across the highest of the three resistors. Calculate the current through each part of the circuit.

A battery of emf 2V and internal resistance 0.5(Omega) is connected across a resistance in 1 second?

A uniform wire of resistance 12Omega is bent in the form of a square. A cell of emf6V having negligible innternal resistance connected across the diagonal of the square. The magnetic induction at its centre ( in tesla ) .

Resistors of 1, 2, 3 ohm are connected in the form of a triangle. If a 1.5 volt cell of negligible internal resistance is connected across 3 ohm resistor, the current flowing through this resistance will be

A uniform potentiometer wire AB of length 100 cm has a resistance of 5Omega and it is connected in series with an external resistance R and a cell of emf 6 V and negligible internal resistance. If a source of potential drop 2 V is balanced against a length of 60 cm of the potentiometer wire, the value of resistance R is

The e.m.f. of a cell is 2.0 volt and the internal resistance is 0.1ohm. It is connected with a resistance of 3.9ohm. Then potential difference across the cell is :–

A cell of e.m.f. 2V and internal resistance 0.5Omega is connected across a resistor R. The current that flows is same as that, when a cell of e.m.f. 1.5V and internal resistance 0.3Omega is connected across the same resistor. Then