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How do you calculate resistance across?

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How do you calculate resistance across?

If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.

How do you find the effective resistance between two points?

The two resistances R1 and R2 of 4 ohms are in series therefore their equivalent resistance,

  1. R’ = 4 Ω + 4 Ω = 8 Ω
  2. Now the resistances R’, R3 and R4 are in parallel so the equivalent resistance of the circuit would be.
  3. Therefore the equivalent resistance between the two points A and B in the given circuit is 1.85 Ω.
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What is the effective resistance of the circuit?

Hint: Effective Resistance refers to the resistance between two points in any electric network in any electric circuit. The total resistance of all the resistors used in any electric circuit where the resistor is two or more is the effective resistance of the circuit.

How do you find the effective resistance between P and Q?

RPQ=2Rr/R+r.

How do you find the effective resistance of a series parallel circuit?

The effective resistance in series combination of two equal resistance is ‘s’. Here ‘s’ is equal to the sum of two resistors ‘R’. The effective resistance in parallel combination of two equal resistance is ‘p’. Here, the reciprocal of equivalent resistance is the sum of reciprocals of individual resistances ‘R’.

What is the effective resistance between A and C?

The effective resistance between points A and C is 2/3R. Explanation: Effective resistance of ADC is is 2R as they are in series.

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What is the combined resistance between P and Q?

163Ω
Therefore, the resistance between P and Q is 163Ω.

What is effective resistance in parallel circuit?

In a complex circuit consisting of two or more resistors, the effective resistance is the measure of the total resistance of all the resistor in the circuit. The resistors can either be connected in parallel combination or series combination.

How do you calculate effective resistance in Igcse?

To calculate the resistance:

  1. First find the value of 1/R (by adding 1/R1 + 1/R.
  2. Next find the value of R by using the reciprocal button on your calculator (labelled either x-1 or 1/x, depending on your calculator)

What is the effective resistance between A and B in the given network?

R = 25/10. ➡️R = 2.5 ohm.