Speed is different from velocity. Velocity is a vector quantity and has a direction. Speed is a scalar quantity and does not require a direction. The answer must be D).
<span>The advantage of using an electromagnet rather than a regular magnet is that an electromagnet is stronger and you can control the power of the magnet. </span>
Answer:
stopping potential is the negative potential applied to the circuit to stop the moving electrons so as to stop the flow of current
for high current high negative potential is applied
The temporarily be the output of a 100-W light bulb is 148 watt.
To find the answer, we need to know about the resistance of the bulb.
<h3>What's the mathematical expression of resistance of the bulb in term of power and voltage?</h3>
- Mathematically, power= voltage²/resistance
- So, resistance= voltage²/power
<h3>What's the resistance of the bulb, if 115 volt is applied to 100 watt bulb?</h3>
Resistance= 115²/100= 132.25 Ohm
<h3>What's the power of the bulb, if 140 volt is applied to it?</h3>
Power= voltage²/resistance
= 140²/132.25
= 148watt
Thus, we can conclude that the temporary output of the bulb is 148 watt.
Learn more about the electric power here:
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