## 1 Introduction
Influence on viscosity of nanofluid due to electric field are studied by [PERSON] et al. [13]. They concluded that the diluted solution of ethylene glycol viscosity decreases with applying a voltage and especially DC voltage reduces viscosity of the fluid more rapidly. The effect of radiations on fluid flow and its application was started by [PERSON] [14]. The radiated phenomena in fluid flow have vital importance in industry. It is used for various purposes, such as in design of nuclear plants, fire propagation [15], plume dynamics [16], materials processing [17], rocket propulsion [18], and missiles, aircraft and space technology. [PERSON] et al. [19] studied the thermal radiation effect on magnetic hydrodynamic fluid flow. Thermal radiations play a vital role in monitoring the heat relocation in the polymer preparation industry. The class of the final product can be determined to a great extent by knowledge of radiated heat transfer and heat controlling factors in the system, which can lead to a preferred creation with required qualities. The efficiency of common fluid in thermal systems is lower compared to a fluid that consists of nanoparticles because it improves the suspension features [20]. The efficiency of common base fluid for thermal system is comparatively poor Mostly non-Newtonian fluids are used in industry as compared to Newtonian fluids. The relationship between stress and strain is linear in a Newtonian fluid, while, in non-Newtonian fluids, this relation is nonlinear [21]. To improve heat transfer, the thermophysical character of the base fluid is studied. The addition of nanoparticle (metal) to the base fluid improves thermal characteristic which enhances the heat transfer of a fluid. [PERSON] et al. [22] have investigated and found that the addition of nanoparticles enhances Nusselt Number. Nanofluid investigated by other researchers as well and different methods have been used by them to improve their features [23; 24; 25; 26; 27; 28]. Confinement of channel enhances the thermal conductivity of the nanofluid [29]. The nanofluid flow in narrow channels enhances the thermal conductivity by approximately 20% [30]. [PERSON] et al. [31] investigated the effect of roughness of the surface on nanofluid flow. Stretching into a uniform sheet is a phenomenon in which sheets become unidirectional, which gives a good characteristic to polymers sheet manufacturing. Different kinds of sheets are prepared in industry, including stretching sheets. Stretching sheets can transfer mass and heat immediately and are presently used in different areas. Steady two-dimensional fluid flows were studied by [PERSON] et al. [32]. [PERSON] et al. [33] expanded the problem for varying velocity with a fixed point. [PERSON] et al. [34] studied steady fluid in the presence of stretching surface considering suction. Later, [PERSON] et al. [35] studied heat relocation over a stretching surface through variable temperature. In all the previous investigations, steady flow has been discussed. For more realistic physical applications, unsteadiness has been introduced to the flow. [PERSON] et al. [36] investigated unsteadiness for the first time. [PERSON] et al. [37] added heat to the unsteady flow over a stretching surface. [PERSON] et al. [38; 39] studied three-dimensional unsteady flows. To the best of the author's knowledge, the combined effect of electric and magnetic fields on unsteady stretching flow with thermal radiations has not been investigated yet. It has a wide range of applications such as in nuclear reactors, magnetic hydrodynamic generators and polymers extrusion. In 1992, [PERSON] [40; 41; 42], for the first time, examined this method for the solution of nonlinear problems and proved that this method is quickly convergent to the approximated solutions. In addition, this technique provides series solutions in the form of functions of a single variable. Solution with this method is important because it involves all the physical parameters of the problem and we can simply discuss its behavior.