Q. When circuit is switched on the ammeter reads 0.5 a Calculate: - 1. The unknown resistance R. 2. The charge passing through the 3 ohm resistor in 120 s. 3. The power dissipated in the 3 ohm resistor. Share with your friends Share 0 Arjun Gupta answered this 2 View Full Answer Vishnu Rai answered this Please find this answer 2