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Current Electricity
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is
About 2 ohms per degree
Zero
Positive
Negative
About 2 ohms per degree
Zero
Positive
Negative
Answer
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Related Question
Current Electricity
If an electric current is passed through a nerve, the man
Is excited
Begins to weep
Becomes insensitive to pain
Begins to laugh
Is excited
Begins to weep
Becomes insensitive to pain
Begins to laugh
Answer
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Current Electricity
The resistance of a few meters of wire conductor in closed electrical circuit is
Very high
High
Low
Practically zero
Very high
High
Low
Practically zero
Answer
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Current Electricity
The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is
Negative
Zero
None of the listed here
Positive
Negative
Zero
None of the listed here
Positive
Answer
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Current Electricity
An open resistor, when checked with an ohmmeter reads
Zero
High but within tolerance
Low but not zero
Infinite
Zero
High but within tolerance
Low but not zero
Infinite
Answer
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Current Electricity
Varistors are
Non-linear resistors
Insulators
Carbon resistors
Resistor with zero temperature co-efficient
Non-linear resistors
Insulators
Carbon resistors
Resistor with zero temperature co-efficient
Answer
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