Which of the following actions cannot induce voltage in a wire?
a) moving a coil of wire near a magnet
b) moving a magnet near a coil of wire
c) changing a current in a nearby coil of wire
d) changing the magnetic field around the coil of wire
e) moving a wire parallel to a magnetic field

Answer : The correct option is, E.

Explanation :

Induced voltage : According to Faraday's Law the induced voltage in a coil is directly proportional to the number of turns in the coil and to the rate at which magnetic field is changing.

Formula for induced voltage :

where,

e = induced voltage

N = number of turns in a coil

= magnetic flux

t = time

Magnetic flux : Magnetic flux is measure the magnetic field within a closed area.

Formula used for magnetic flux :

where,

B = magnetic field

A = area

= angle between the magnetic field and the area of loop

Only option (E) can not induced voltage in a wire because when moving a wire parallel to a magnetic field then the will be zero, so will become 1. Hence, the flux becomes constant.

As, the flux is a constant value for this, so, the induced voltage becomes 0 because . So, it will not induced voltage.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2