1 ,A 68.1-W light bulb is connected to a 215.0-V source and operates for 2.3 hours. Find the electrical resistance of the light bulb
2, A battery of potential difference 4.1 V produces a steady current of 3.2 A for 11.0 minutes. Calculate the energy that it transfers
3, A cell membrane is 0.0000006 m thick and has an electric potential difference between its surfaces of 0.10 V. What is the electric field within the membrane?
4, A resistor R, is connected between the terminals of a 3.8 V battery. A charge of 4.7 C passes through the resistor in 7.9 s. What is the resistance of the resistor?

vika78678    2   06.04.2020 20:54    9