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This is an MCQ-based quiz on Energy and Power.
This includes kinetic energy, potential energy, restoring energy, and mechanical energy.
A 68 Ω resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is
A 120 Ω resistor must carry a maximum current of 25 mA. Its rating should be at least
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is
In 40 kW, there are
How much continuous current can be drawn from a 60 Ah battery for 14 h?
If it takes 400 ms to use 12,000 J of energy, the power is
A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is
A 33 Ω half-watt resistor and a 330 Ω half-watt resistor are connected across a 12 V source. Which one(s) will overheat?
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be
A 75 Ω load uses 2 W of power. The output voltage of the power supply is approximately
A 3.3 kΩ resistor dissipates 0.25 W. The current is
When the current through a 12 kΩ resistor is 8 mA, the power is
In 0.025 W, there are
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?
If you used 600 W of power for 60 h, you have used
How much time will be required to perform 520 J of work at the rate of 20 W?
Which one of the following is not a form of energy?
Energy equals ____ multiplied by time.
Work
Power
Force
None of these
When an object falls freely towards the ground, then its total energy ____.
Increases
First increases then decreases
Remains constant
Decreases
What do you mean by power in terms of Physics?
Power is energy per unit of time
Power is energy
Power is current per unit of time
None of these
