What Do You Mean by an Equivalent Resistance? - Physics

What do you mean by an equivalent resistance?

One Line Answer

An equivalent resistor is that resistor which when replace any combination of resistors the current through the circuit is not altered or changed.

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Chapter 4: Current Electricity - Exercise 4.1 i [Page 173]

Chapter 4 Current Electricity
Exercise 4.1 i | Q 13 | Page 173

Name the material which is the best conductor of electricity.

Calculate the resistance of an aluminium cable of length 10 km and diameter 2.0 mm if the resistivity of aluminium is 27 × 10⁻⁸ Ωm.

Give the law of combination of resistances in series.

State how are the two resistors joined with a battery when same current flows in each resistor.

To increase the effective resistance in a circuit, the resistors are connected in _______________ .

Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell. Calculate the current in each resistor.

Calculate the value of the resistance which must be connected to a 15 ohm resistance to provide on effective resistance of 6 ohm.

The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.