If inductance is denoted by L and resistance by R, which of the following is true for a choke?
Correct answer: B. R is very small, L is large
- A. R is large, L is very small
- B. R is very small, L is large
- C. Both R and L are large
- D. Both R and L are very small
Explanation
In an ideal choke, a coil should have almost zero internal resistance, R≈0, if a coil has resistance it will consume power.Since R needs to be zero, L will be greater than R. L>R.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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