Multiple Choice
If the connections across the resistor are reversed, then graph between current and potential difference is
A) variable
B) straight lined
C) constant
D) inverted
Correct Answer:
Verified
Correct Answer:
Verified
Q15: Resistance of metal is affected by<br>A)presence of
Q16: Constructive interference happens when two waves are<br>A)out
Q17: At constant temperature, resistance and cross-sectional area
Q18: At threshold voltage, resistance of diode<br>A)decreases<br>B)increases<br>C)remains constant<br>D)varies
Q19: Effect of diffraction is greatest if waves
Q20: A rectifier converts<br>A)DC to AC<br>B)AC to DC<br>C)voltage
Q21: For listening radio in cars, external radio
Q22: For destructive interference, the path difference is<br>A)odd
Q23: In NTC thermistor on increasing temperature, the
Q25: Threshold voltage at which LED emits light