Please show your work adn answer each one of the questions correctly to get a ra
ID: 2288245 • Letter: P
Question
Please show your work adn answer each one of the questions correctly to get a raing of 5 stars.
1.) A galvanometer with a coil resistance of 9.32 ? is used with a shunt resistor to make a nondigital ammeter that has an equivalent resistance of 0.39 ?. The current in the shunt resistor is 2.60 mA when the galvanometer reads full scale. Find the full-scale current of the galvanometer.
__________A
2.) In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage measured is only an approximation to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1485-? resistors connected in series across a 55.8-V battery.
(a) Find the voltage across one of the resistors.
_____________V
(b) A nondigital voltmeter has a full-scale voltage of 55.8 V and uses a galvanometer with a full-scale deflection of 4.90 mA. Determine the voltage that this voltmeter registers when it is connected across the resistor used in part (a).
__________V
3.) Determine the voltage across the 5.0-? resistor in the drawing (V1 = 10.0 V and V2 = 15.0 V).
V
Which end of the resistor is at the higher potential?
right end of the resistor left end of the resistor
5.) An electric blanket is connected to a 110-V outlet and consumes 181 W of power. What is the resistance of the heater wire in the blanket?
___________?
Explanation / Answer
1.)
Coil R is 9.32 ohms
and total parallel of coil and shunt is 0.39 ohms
that means the shunt resistance is
Rs = 9.32