Answer to Question #51508 in Electricity and Magnetism for samuel

Question

1. A battery charger supplies 10 A to charge a storage battery which has an open - circuit voltage of 5.6 V. If the voltmeter connected across the charger reads 6.8V, what is the internal resistance of the battery at this time?

2. A nichrome wire is 1.0m long and 1.0mm 2 in cross-sectional area. It carries a current of 4.0 A when a potential difference of 2 V is applied between its ends. Calculate the conductivity of the wire.

3. The current I in a conductor as a function of time t is given as I(t)=5t 2 −3t+10 where current is in ampres A and t is in seconds s. What quantity of charge moves across a section through the conductor during the interval t=2s to t=5s?

4.The current I in a conductor as a function of time t is given as
I(t)=5t 2 −3t+10
where current is in ampres A and t is in seconds s. What quantity of charge moves across a section through the conductor during the interval t=2s to t=5s?