An ammeter in a 60.0-Hz circuit reads 2.50 A. Determine the maximum current in the circuit. [Hint: Study Eqs. (35.3) and (35.4).]
Themaximum current in the circuit if an ammeter in a
Answer to Problem 14SP
Solution:
Explanation of Solution
Given data:
The rms value of current is
Formula used:
The expression that shows the relation between rms and the maximum value of current is expressed as,
Here,
Explanation:
Consider the expression that shows the relation between rms and the maximum value
Solve for
Substitute
Conclusion:
The maximum current in the circuit is
Want to see more full solutions like this?
Chapter 35 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
- At the instant a current of 0.20 A is flowing through a coil of wire, the energy stored in its magnetic field is 6.0 × 10-3 J. What is the self-inductance of the coil?arrow_forwardWhat direct current will produce the same amount of thermal energy, in a particular resistor, as an alternating current that has a maximum value of 2.60 A?arrow_forwardThe rms current in a copy machine is 5.84 A, and the resistance of the machine is 18.2Ω. What are (a) the average power and (b) the peak power delivered to the machine?arrow_forward
- Calculate the resistance in an RL circuit in which L = 2.50 H and the current increases to 90.0% of its final value in 3.00 s.arrow_forwardShow that the units 1 A2 ⋅ Ω = 1 W, as implied by the equation P = I 2R .arrow_forwardWhat capacitance when connected in series with a 500Ω resistor will limit the current drawn from a 48-mV 465-kHz source to 20μA?arrow_forward
- The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s. ΔVbattery = 60 V, C = 2.0 F, and R = 3.0 Ω. What is the current in the circuit at t = 5.2 s, in Ampere?arrow_forwardA motor has an armature resistance of 3.65ohms. If it draws 8.20A when running at full speed and connected to a 120V line, how large is the back emf?arrow_forwardAssuming a 60 Hz, how much time – in seconds – is the peak positive current behindthe peak positive voltage when the current lags the voltage by:a. 90 degreesb. 0 degreesc. 60 degreesarrow_forward
- A fluorescent lamp unit conducted to a 110v AC line takes 1.20v. what is the power factor?arrow_forwardIf two coils placed next to one another have a mutual inductance of 7.50 mH, what voltage (in V) is induced in one when the 2.50 A current in the other is switched off in 40.0 ms?arrow_forwardConsider an LC circuit with the frequency of oscillations in the circuit 247.1 Hz. What is the maximum current Imax flowing through the circuit if the maximum charge is 0.0082 C?arrow_forward