A block of carbon is 3.0 cm long and has a square cross-sectional area with sides of 0.5 cm. A potential difference of 8.4 V is maintained across its length.
(a) What is the resistance of the block?
(b) What is the current in this resistor?
A block of carbon is 3.0 cm long and has a square cross-sectional area with sides of 0.5 cm. A potential difference of 8.4 V is maintained across its length.
(a) What is the resistance of the block?
(b) What is the current in this resistor?
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