Q8: A solid specimen of dielectric dielectric constant of 4.0, shown in the figure has an internal void of thickness Imm. The specimen is 1cm thick and is subjected to a voltage of 80 kV(rms). If the void is filled with air and if the breakdown strength of air can be taken as 30 kV(peak)/cm, find the voltage at which an internal discharge can occur. 80 KV Iimm 10 mm (ms)

Q: What happens when a lightbulb burns out?

A: Introduction: The flow rate of electric charge through a conductor is known as electric current.

Q: Why does a wire that carries electric current become hot?

A: Given:  A current carrying wire

Q: How is the movement of electricity through air different from is movement through a copper wire?

A: When no current flows through a piece of copper, the free electrons are moving rapidly about. Their…

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A: The given household circuit contains following components 0.5 hp motor  1 hp=735.5 watts  so power…

Q: How much energy is given to each coulomb of charge passing through a 6-V battery?

A: The energy given to each coulomb of charge is equal to the amount of work required to move it. Now,…

Q: The damaging effects of electric shock result from the amount of current that flows in the body.…

A: From Ohm's law we have  I = V / R

Q: 29) What is the charge stored on the 4 uF capacitor in the circuit shown in the figure? GuF A) B) C)…

A: As per guidelines, the first question (#29) has been answered.

Q: when you use lights from battery does it have decrease the same voltage every hour or it depends

A:

Q: What is the resulting voltage when you connect two (2) 1.5 V batteries in series?

A:

Q: A voltmeter is marked 100ohms per volt and another voltmeter is marked 1000ohms per volt. which will…

A: Voltmeter which offers maximum possible resistance in order to have minimum effect on the voltage…

Q: Why don’t birds get electrocuted when they touch high-voltage power lines?

A: The current flows from a region of high potential to a region of low potential.

Q: 7 (a) What is least count of voltmeter? (b) In a voltmeter there are 20 divisions between the ‘0’…

A: Part-a The least count of voltmeter is defined as the between two terminals minimum potential…

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A: In the cooling system of an automobile, the cooling water works as current, water pump work as…

Q: The graph depicts the measured voltage across a 40 resistor connected to an AC source Calculate the…

A:

Q: In a A.C. circuit containing only current leads voltage by current is in phase with voltage current…

A: To find-Relation between current and voltage=?Given-The A.C. circuit contains only capacitor.

Q: How does stored energy vary with voltage

A: We know that the stored energy  U = 1/2 CV2 So the energy  is proportional  to V2 of voltage.

Q: An electron is placed in a location with an external voltage of 0 V. To the right of the electron is…

A: When the electron is placed between the region which either side has 5 V and -5 V potential. This…

Q: Determine the current through a 200-mF capacitor whose voltage is shown below. 1) 50 -50

A: The voltage waveform can be described mathematically as Vt=50t  V…

Q: Why isn’t a bird sitting on a high-voltage power line electrocuted? Contrast this with the situation…

A:

Q: Power packs should have substantial overcapacity both with regard to voltage as well as current.…

A: Power packs should have substantial overcapacity both with regard to voltage as well as current.…

Q: What happens when a light bulb goes out?

A: When a light bulb goes out, the filament of the incandescent bulb gets burned out. Until the glowing…

Q: If the voltage is increased, then the electrical energy will be (keeping Resistance and time…

A: Required  effect on electrical energy due to increase the voltage keeping resistance and time fixed.

Q: How can electrical demands of a device be calculated?

A:

Q: Why does current remains the same if both voltage and resistance increases at the same rate?

A: We can write, The current is written as, the rate of change of the voltage with respect to the…

Q: A negative charge located in a region of positive voltage will move towards higher positive voltage.…

A: A region with positive charge implies the higher potential region and a region with negative charge…

Q: Why the current drops and decays down to zero as the capacitor charges and the time increases?

A:

Q: In a very simple circuit consisting of a battery and a capacitor with an adjustable distance between…

A: The capacitance is given by, C=ε0Ad Thus,                   C∝1d We can see that the capacitance is…

Q: What determines the severity of a shock? Can you say that a certain voltage is hazardous without…

A: Shock is a dangerous electrical current that travels through the body and can increase the intensity…

Q: Why are circuits in homes connected in parallel?

A: In parallel circuits, the voltage on each electrical component remains the same. So, the loads…

Q: A low voltage supply from which one needs high currents must have very low internal resistance. Why?

A: Ohm's law states that " Potential difference across any two points in a conductor is directly…

Q: Why does current remains the same if both voltage and resistance increases at the same rate? Explain

A: Required : Why does current remains the same if both voltage and resistance increases at the same…