When a heating a coil made of 34.0 m of 1.0 mm diameter Nichrome wire is...
When a heating a coil made of 34.0 m of 1.0 mm diameter Nichrome wire is in use, its temperature increases from 20°C to 140°C. The heating coil in connected to a 9V battery. What will happen to the current in the heating coil as the temperature increases?
A) The current will increase
B) The current will decrease
C) The current will remain the same
D) The current will increase and then decrease
Homework Answers
Solution : Nichrome is an alloy , mostly the alloys have positive value of temperature coefficient hence the resistance of the alloys increases with increase in temperature due to this the magnitude of the current flowing in the nichrome will decrease with increment of temperature.
Go for option B.
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Posting this question for the third time. how CAN I report this
issue ?
A certain toaster has a heating element made of Nichrome resistance wire. When the toaster is first connected to a 140-V source of potential difference and the wire is at a temperature of 20.0°C), the initial current is 1.70 A, but the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A. (a) Find the power the toaster converts when it is at its operating...
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Nichrome wire of cross-sectional radius 0.774 mm is to be used
in winding a heating coil. If the coil must carry a current of 9.50
A when a voltage of 3.00 ✕ 102 V is applied across its ends, find
the following.
Nichrome wire of cross-sectional radius 0.774 mm is to be used in winding a heating coil. If the coil must carry a current of 9.50 A when a voltage of 3.00 x 102 V is applied across its...
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Posting this question for the third time. how CAN I report this
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