a good electrical conductor also be a good thermal conductor?
on a variety of sources of electricity as a means of powering a city?
How is an ammeter wired in a
How is a voltmeter wired in
Explain how you would find
the resistance of a resistor if you had a battery, a resistor, 5 wires, an
ammeter, and a voltmeter.
You have five
1.5 V cells. Explain how you would connect them to
highest output potential (b) a given current for the longest
possible time (c) an output potential of 4.5 V
much electrical energy is supplied by a 12 V battery when:
(a) a charge
of 2000 C passes through it.
(b) a current
of 3.5 A flows from it for 25 s.
What is the
resistance of the following?
(a) A torch
bulb that draws 0.25 A from a 12 V supply.
immersion heater that draws 10 A from a 240 V supply.