Home
Class 12
PHYSICS
A letter A is constructed as a uniform w...

A letter `A` is constructed as a uniform wire of resistance 1 ohm/cm. The sides of the letter are 20 cm long and the cross piece in the middle is 10 cm long while the vertex angle is `60^(@)` the resistance of the letter between the two ends of the legs is

A

40/3 `ohm`

B

80/3 `ohm`

C

`40 ohm`

D

`10 ohm`

Text Solution

Verified by Experts

The correct Answer is:
B

Combinations of resistors
Promotional Banner

Similar Questions

Explore conceptually related problems

A letter A consists of a uniform wire of resistance 1 ohm per cm. The sides of the letter are each 20 cm long and the cross-piece in the middle is 10 cm long while the apex angle is 60^(@) . Find the resistance of the letter between the two ends of the legs.

Two sides of a triangle are 10 cm and 15 cm and the base is 20 cm long . If another triangle similar to the first triangle has the base measuring 32 cm , then other two sides of the triangle are

The angle between two legs of a compass is 60^(@) and length of each is 10 cm the distance between end points of the leg is

Letter A as shown in Fig. 4.57 has resistance on each side of arm. Calculate the total resistance between two ends of the legs.

A piece of wire 20 cm long is bent into the from of an arc of a circle, subtending an angle of 60^(@) at its centre. Find the radius of the circle.

A wire 100cm long and 2.0mm diameter has a resistance of 0.7 ohm , the electrical resistivity of the material is

The resistance of a 50 cm long wire is 10 Omega . The wire is stretched of uniform wire of length 100 cm. The resistance now will be

A cell of internal resistance 3 ohm and emf 10 volt is connected to a uniform wire of length 500 cm and resistance 3 ohm . The potential gradient in the wire is