The effect switch has on current when open and when closed.
Answer to Problem 1CQ
Switch open-low current, Switch close-high current.
Explanation of Solution
Given information:
The given statement is a switch has a variable resistance that is nearly zero when closed and extremely large when open, and it is placed in series with the device it controls.
The given figure is
Introduction:
Kirchhoff's second rule states that in a closed loop the sum of all the voltages is equal to zero.
Ohms law states that at constant temperature potential difference
Where
Equivalent resistance of several resistors connected in series is
Resistance is the property which acts as a hindrance to the current which means it opposes the flow of current. It is given that a switch has a variable resistance that is nearly zero when closed.
The given figure has zero variable resistance which leads to larger current drawn from the circuit.
It is given that a switch has an extremely large variable resistance when open. In case of extremely large variable resistance the current will be very less because the large value of resistor opposes the flow of current.
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Chapter 21 Solutions
College Physics
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