A heater consists of a variable resistor (a resistor whose resistance can be varied) connected across an ideal voltage supply. To increase the heat output, should you decrease the resistance or increase the resistance? Explain your answer.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
A heater consists of a variable resistor (a resistor whose resistance can be varied)
connected across an ideal voltage supply. To increase the heat output, should you decrease
the resistance or increase the resistance? Explain your answer. (b) A 9-μF capacitor is
charged through a 15-k Ω resistor by a 220-V power supply. How long does it require for
the capacitor to acquire 89 percent of its final charge?
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