Physicshard · Past Paper
Four identical resistors each of resistance R are connected to form a square. The equivalent resistance between opposite corners is:
AR
B2R
CR/2
D4R
✓ Correct Answer: A — R
Two branches of 2R in parallel give (2R*2R)/(2R+2R) = 4R^2/4R = R.
Share this question
More from Physics
- A ray of light passes from air into a liquid. The angle of incidence is 45 and angle of refraction is 30. Find refractive index.
- In Fleming's Left Hand Rule, the middle finger represents the direction of:
- The power of a concave lens of focal length 25 cm is:
- Two trains 120m and 80m long are running in opposite directions with velocities 42 km/h and 30 km/h. The time they take to cross each other is:
- The velocity of a falling object in a vacuum depends on: