What is the current is the primary coil

Reference no: EM13652441

A high intensity desk lamp is rated at 45W but requires only 12V. It contains a transformer that converts 120V household voltage.

a) Is the transformer step up or step down?
b) What is the current in the secondary coil when the lamp is on?
c) What is the current is the primary coil?
d) What is the resistance of the bulb when in?

Reference no: EM13652441

Questions Cloud

Explain hanol c2h5oh is being promoted as a clean fuel : hanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline mixtures. Calculate the ?H°rxn for the combustion of ethanol.

A fighter jet is launched from the aircraft carrier : A fighter jet is launched from the aircraft carrier with the aid of its own engines and a steam powered catapult. The thrust of its engines is 2.3E5N. In being launched from rest, it moves a distance of 87m and has a kinetic energy of 4.5E7J at li..

Explain the principal and angular quantum numbers : What are the principal and angular quantum numbers for the HOMO and LUMO for each of the above atom. Please provide the number and letter designation for the atomic orbital

What will be the equilibrium temperature : What will be the equilibrium temperature when a 239 g block of copper at 274 degrees C is placed in a 140 g aluminum calorimeter cup containing 817 g of water at 13.7 degrees C?

What is the current is the primary coil : A high intensity desk lamp is rated at 45W but requires only 12V. It contains a transformer that converts 120V household voltage.

An energy was consumed by the vaporization of a sample of n2 : In a cup calorimeter experiment, a student found that 10.9 kJ of energy was consumed by the vaporization of a 56.0 g sample of N2. Use the student's experimental data to calculate a value for ΔHvap for N2.

Describe the enthalpy of combustion for propane : The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 400 grams of ice initially at -9°C to liquid water at 84°C

What is this temperature in degree fahrenheit : The official record for the lowest temperature ever recorded on earth was set at Vostok, Antarctica, on July 21, 1983. the temperature on that day fell to - 89.2 degree celcius well below the temperature of dr

Proton is projected perpendicularly into a magnetic field : A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.25 T. The field is then adjusted so that an electron will follow a circular path of the same radius when it is projected perpendicularly into the field with the sam..

User Account

All Pages