Question

Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is the relation known? How much heat will an instrument of 12W produce in one minute if it is connected to a battery of 12V?ORExplain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R , R and R , joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.

Answer 1

Following are the response to the given question:

Explanation:

• Heat transfer is governed by Joule's law.
• To some degree, all materials oppose current flow.
• Just because of that, the current must be driven by external energy.
• The battery supplies this energy.
• Resistance becomes hot although some of this energy is wasted as heat energy.
• Carrying a charge is indeed a form of work.
• The difference between Q and Q through a possible V is given as just a number.

$\to Q = I t$

Using Ohm's law:

$\to V = I R\\\\\to W = 12\ m$

The work done by carrying the charges in th

It appears that the wire is rough as a result of the heat being created. i.e.,

$\to H = V\ l\ t= 12\ R\ t.$

Energy dissipates in the form of thermal energy.

Learn more:

Ohm's law: https://brainly.in/question/1959347