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Why is the emf zero when maximum?
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Why is the emf of a cell greater than the terminal potential difference when the cell is used to supply current to an external resist?

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Why is the emf always even when no current is drawn through the battery?

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Why terminal voltage is greater than emf when battery is charging or discharging?

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Why the potential difference across the terminals of a cell is less than its emf when a current is drawn from it?

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When the Hall voltage is zero when the semiconductor is?
Answer : The Hall voltage in a semiconductor is zero when the semiconductor is **not subjected to any magnetic field** or when **no current flows through the material**. Here's why: 1. **No ... voltage is zero when there is either no current flowing or no magnetic field applied to the semiconductor**....

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What are the safety considerations when working with electrical wiring in zero-gravity or reduced gravity environments?

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Can electric potential be zero when the electric field is not zero?

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Calculate speed of motor when delivery maximum voltage. Also calculate the resistance to be added to achieve 3/4th of maximum torque at time of starting.

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Is the electromotive force emf the maximum potential difference between the terminals of the battery?

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When discharging the terminal voltage of a battery can never be greater than the emf of the battery?

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When the terminal potential difference of a battery is equal to its emf?

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When the emf of the battery is equal to its terminal potential difference?

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When the emf of a battery is equal to its terminal potential difference?

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Why does voltage go to zero?
Answer : Voltage going to zero can happen for a few different reasons, depending on the situation. Here are some common explanations: ### 1. **Power Loss or Shutdown** - If a circuit is turned ... wrong with the components. You can check the connections, power source, and components to find the cause....

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Why electric field inside a conductor is always zero?

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Why electric field inside a dielectric is not zero?

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Why field rheostat is kept in minimum position while armature rheostat at maximum position?

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There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

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In the motors starting purpose why the armature rheostats at maximum position while the field rheostat is kept in minimum position?

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Capacitor is load free component but why ampere meter shows current when capacitor bank breaker close?

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Why does current decrease when voltage increases in a capacitor?

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Why does the terminal voltage of cell decrease when current is drawn from it?

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Why does the terminal potential difference of a battery decrease when the current drawn from it is increased?

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Why the terminal potential difference of a battery decreases when the current drawn from it is increased?

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Why does insulation resistance decrease when temperatures increase?

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Why insulation resistance decreases when temperature increase?

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Why is the resistance higher when the wire is longer?

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Why back emf used for a dc motor? highlight its significance.

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