It is easy to produce a potential difference of several thousand volts between your body and the floor by scuffing your shoes across a nylon carpet. When you touch a metal doorknob, you get a mild shock. Yet contact with a power line of comparable voltage would probably be fatal. Why is there a difference?

Q: Construct Your Own Problem. Consider a battery used to supply energy to a cellular phone. Construct…

A: Generally the capacity of the battery of a smart phone is 3000 mAh. The voltage is 12 V.  The energy…

Q: A 20 uF capacitor is charged to 120 V and then disconnected from the power supply. If a second…

A: When two capacitors are connected in parallel the equivalent capacitance of the capacitor is the sum…

Q: 90.0 V i a) Find the equivalent capacitance (in µF) of the system. HF

A: If the capacitors C1 and C2 are in series combination then equivalent capacitance…

Q: A 4 µF capacitor is charged by a 200 V supply. It is then disconnected from the supply, and is…

A:

Q: Immediately after the switch is closed, the voltage across the 3uF capacitor is 1 ΜΩ + 45 V 3 µF

A:

Q: Assume that a red blood cell is spherical with a radius of 4.0 ×10^−6 m and with a wall thickness of…

A: Spherical Capacitor: It generally consists of two concentric hollow sphere wiith inner radius (r)…

Q: The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the…

A: Given             Energy stored (E) = 345 w-s            capacitance (C) = 35 μF

Q: Two conductors made of the same material are connected across the same potential difference. The…

A:

Q: Two metallic terminals protrude from a device. The terminal on the left is the positive reference…

A: Energy required to push the electron into the left terminal

Q: Suppose that, while you are sitting in a chair, charge separation between your clothing and the…

A: a) In the given condition the charge is conserved thus q is constant,

Q: Two capacitors, one C1 = 12.0 mF and the other of unknown capacitance C2, are connected in parallel…

A: Since the capacitors are in parallel, the equivalent capacitance will be Ceq=C1+C2

Q: You built a circuit consisting of three parallel plate capacitors with capacitances of 2.0 F, 3.0 F,…

A:

Q: What is the stored electrical energy in the system of two capacitors in units of Joule after…

A:

Q: A large laser used to ignite a fusion reaction requires short pulses of energy. The energy is…

A: (a) Energy stored in the capacitors whereis the capacitance and voltage of the capacitor…

Q: In open heart surgery a much smaller amount of energy will defibrillate the heart.(a) What voltage…

A: (a) The energy stored in the capacitor is, U=12CV2⇒V=2UCV=260.0 J8.00×10-6 FV=3.87×103 VV=3.87 kV

Q: What voltage is needed to accelerate an alpha particle from rest to 0.2% the speed of light, that is…

A: Force on charge particles F=qE

Q: A defibrillator containing a 16.7 μF capacitor is used to shock the heart of a patient by holding it…

A: Capacitance is Voltage is Note:Find:The energy released into the patient.

Q: - What is the potential difference acrobb. the capacitor? (answer in V) 5) It the battery is…

A: Given: The value of R1 is 7.6Ω.            The value of R2 is 3.80 Ω. To determine: (a) The…

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.