2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floor Polisher connected with resistance of 12 ? 3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the charges Transferred with the given time.
2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floor Polisher connected with resistance of 12 ? 3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the charges Transferred with the given time.
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Please answer items 2 and 3 only.
Transcribed Image Text:Solve the following:
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2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floor
Polisher connected with resistance of 12 ?
3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the charges
Transferred with the given time.
4. What is the resistance of a conductor at 50° C if its resistance at 0°C is 1 ohm and the temperature coefficient
of resistance of 9.8 x 10-³/°C
6. Complete the table:
5. A silver wire has a resistance of 2.3 at 0°C and a temperature coefficient of resistance of 3.75 x 10-³/°C.
What is final temperature when the final resistance is 3.8 ohms. ?
V, Volts
Electric Circuit and Ohm's Law
8 volts
20 volts
10 Volts
36 volts
I, Ampere
2.8 mA
40A
130mA
ben
R, ohms
156 02
25 ΚΩ
450 ΚΩ
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