5. A lamp draws a current of 1125 milliamperes and has a filament resistance of approximately 50.5 ohms. What is the voltage across the lamp? A) 0.63 volt B) 0.5 volt C) 6.3 volts D) 5 volts
5. A lamp draws a current of 1125 milliamperes and has a filament resistance of approximately 50.5 ohms. What is the voltage across the lamp?
A) 0.63 volt
B) 0.5 volt
C) 6.3 volts
D) 5 volts
6. A voltage of 12 volts across a lamp produces a current of 0.2 ampere. What is the filament resistance of the lamp?
A) 2.4 Ω
B) 24 Ω
C) 6 Ω
D) 60 Ω
7. What is the relative amplitude of the flow in the filament of a miniature lamp the instant power is applied in comparison with the current at full brightness?
A) High.
B) Low.
C) The current is the same at all times.
D) It depends on the type of lamp.
8. Current flow through a dc circuit is 2.5 amperes and the voltage across it is 120 volts. How much power is dissipated by the circuit?
A) 5760 watts
B) 120 watts
C) 300 watts
D) 19.2 watts
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