Magnetic field at a distance a from long straightwire B = i / 2a where = permeab

Question

Magnetic field at a distance a   from long straightwire B = i / 2a where = permeability of free space = 4 * 10 ^ -7 H /m               i = current = 92 A            a = distance of the point from wire = 7 mm = 7 * 10 ^ -3 m substitue values we get   B = 26.29 * 10 ^ -4T So, potential difference V A - V B = BLv where L = length =  120 cm = 1.2 m             v= speed = 36 m / s substitue values we get   VA-VB = 1135.73 * 10 ^ -4 V                                                                                                                 = 113.573 * 10 ^ -3 V                                                        = 11.3573 mV Is this correct or have I missed a step and is my calculationsright. Magnetic field at a distance a   from long straightwire B = i / 2a where = permeability of free space = 4 * 10 ^ -7 H /m               i = current = 92 A            a = distance of the point from wire = 7 mm = 7 * 10 ^ -3 m substitue values we get   B = 26.29 * 10 ^ -4T So, potential difference V A - V B = BLv where L = length =  120 cm = 1.2 m             v= speed = 36 m / s substitue values we get   VA-VB = 1135.73 * 10 ^ -4 V                                                                                                                 = 113.573 * 10 ^ -3 V                                                        = 11.3573 mV Is this correct or have I missed a step and is my calculationsright.

Explanation / Answer

Given            i = current = 92 A            a = distance of the point from wire = 7 mm = 7 * 10 -3 m             L = length =  120 cm = 1.2 m             v= speed = 36 m / s       Magnetic field at a distance a   from long straightwire                                         B = i / 2a where = permeability of free space =  4 *10 -7 H /m                                                                       B = (  4 * 10 -7 H /m  *  92 A)/ 2 * 7 * 10 -3 m                                     = 26.29 * 10 -4 T potential difference                          V A - V B = BLv                                           = 26.29 * 10 -4 T*1.2 m *36 m /s                                           =113.573 * 10 -3 V                                                        = 11.3573 mV you did the answere is correct                                           a = distance of the point from wire = 7 mm = 7 * 10 -3 m             L = length =  120 cm = 1.2 m             v= speed = 36 m / s       Magnetic field at a distance a   from long straightwire                                         B = i / 2a where = permeability of free space =  4 *10 -7 H /m                                                                       B = (  4 * 10 -7 H /m  *  92 A)/ 2 * 7 * 10 -3 m                                     = 26.29 * 10 -4 T potential difference                          V A - V B = BLv                                           = 26.29 * 10 -4 T*1.2 m *36 m /s                                           =113.573 * 10 -3 V                                                        = 11.3573 mV you did the answere is correct                                            v= speed = 36 m / s       Magnetic field at a distance a   from long straightwire                                         B = i / 2a where = permeability of free space =  4 *10 -7 H /m                                                                       B = (  4 * 10 -7 H /m  *  92 A)/ 2 * 7 * 10 -3 m                                     = 26.29 * 10 -4 T potential difference                          V A - V B = BLv                                           = 26.29 * 10 -4 T*1.2 m *36 m /s                                           =113.573 * 10 -3 V                                                        = 11.3573 mV you did the answere is correct Magnetic field at a distance a   from long straightwire                                         B = i / 2a where = permeability of free space =  4 *10 -7 H /m                                                                       B = (  4 * 10 -7 H /m  *  92 A)/ 2 * 7 * 10 -3 m                                     = 26.29 * 10 -4 T potential difference                          V A - V B = BLv                                           = 26.29 * 10 -4 T*1.2 m *36 m /s                                           =113.573 * 10 -3 V                                                        = 11.3573 mV you did the answere is correct                                                        = 11.3573 mV you did the answere is correct                               

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