An electric power source supplies a constant current of 4 A for 6.5 s to a light bulb. The total energy given off in the form of light and heat is 2.99 kJ. Calculate the voltage drop across the bulb.

Q: 1.) A 75 W light bulb draw a current of 0.80 A. If the light bulb stays on for 3 hours, how many…

A: Given, a light bulb having Power, P = 75 W Current, I = 0.80 A Time, t = 3 hr

Q: A 37 N resistor is connected to an AC voltage source. The figure shows the power dissipated by the…

A: Given     37Ω resistor is connected to an AC voltage source. From the graph the wattage of resistor…

Q: An electric kettle draws 10 A at 220 V for two minutes to heat water. Calculate the energy put into…

A: Electrical Energy = Power (W) x Time (s) and Power (Watts) = V x I

Q: Current is measured through a resistor during a laboratory experiment. 1.172 C of charge is measured…

A:

Q: A 1.2KQ connected across a battery for 1.0 minutes, where it dissipated 0.9C of energy a. Determine…

A: The current through the resistor over the minute is approximately 3.54 mA, and the voltage developed…

Q: The value of the total charge entering a circuit terminal is given as Q=5 sin(30t) C What will be…

A: The value of the total charge entering a circuit terminal is given as Q=5 sin(30t) C What will be…

Q: V source uses two joules of energy per second. Calculate the current being generated by this voltage…

A: In this question we will find current being generated by voltage source...

Q: LED lamp rated 9 W is on for 30 minutes and TV of 60 W is on for 2.5 hours. How much energy has been…

A: Power of LED lamp Time for which LED is on Power of TV Time for which TV is on.

Q: The value of the total charge entering a circuit terminal is given as Q=5 sin(30t) C What will be…

A:

Q: A 5-hp motor operates at full capacity. How much work (in kJ) is performed by the motor over a…

A: Motor rating, P=5 hp. Time, t=3 min. And 1 hp=746 W.

Q: 2. An energy source forces a constant current of 2 A for 10 s to flow through a light bulb. If 2.3…

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Q: A battery is used to move 400 coulombs of charge across a potential difference of 10 volts. What is…

A:

Q: A 12 V lead-acid car battery has a measured voltage of 11.2 V when delivers 40 A to  a load. What…

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KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.